ASTROSAT CZTI

Data Quality Report

Orbit 38881

Creation date: 2024-06-27T21:57:44.383323
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_093T01_9000005410_38881cztM0_level2.fits modeM0/AS1A12_093T01_9000005410_38881cztM0_level2_quad_clean.evt
Size (bytes)351,043,20096,050,880
Size334.8 MB 91.6 MB
Events in quadrant A3,855,791616,967
Events in quadrant B2,697,902673,099
Events in quadrant C2,619,937651,728
Events in quadrant D3,412,268599,683

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146702
B0113462
C0109452
D0136782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52454718.979981%
B5245380.724500%
C524570.133460%
D52451302.478551%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7158 5246 417 417 5.83% 7.95%
B 7158 5246 24 24 0.34% 0.46%
C 7158 5246 3 3 0.04% 0.06%
D 7158 5246 124 124 1.73% 2.36%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 248 1123620 9409.98 594 583 119.3
A 10 83 390585 3267.84 594 583 119.3
A 9 143 27274 223.65 594 583 119.3
B 4 171 86639 744.74 615 600 115.5
B 5 184 62641 537.02 615 600 115.5
B 0 186 61109 523.76 615 600 115.5
C 15 214 216541 1553.53 607 612 139.0
C 0 10 13604 93.47 607 612 139.0
C 14 254 11546 78.67 607 612 139.0
D 12 217 322851 2236.19 605 591 144.1
D 5 222 254343 1760.81 605 591 144.1
D 2 249 124644 860.82 605 591 144.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter